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Adaptive error estimation in linearized ocean general circulation models
(Massachusetts Institute of Technology, 1999)
Data assimilation methods, such as the Kalman filter, are routinely used in oceanography. The statistics of the model and measurement errors need to be specified a priori. In this study we address the problem of estimating ...
Mechanisms and variability of salt transport in partially-stratified estuaries
(Massachusetts Institute of Technology, 2000)
The variability of salt transport determines the variation of the length of the salinity intrusion and the large-scale density gradient in an estuary. This thesis contains three studies that address salt transport and the ...
The upper ocean response to the monsoon in the Arabian Sea
(Massachusetts Institute of Technology, 2000)
Estimation of the upper ocean heat budget from one year of observations at a moored array in the north central Arabian Sea shows a rough balance between the horizontal advection and time change in heat when the one-dimensional ...
Constraining North Atlantic circulation with transient tracer observations
(Massachusetts Institute of Technology, 2003)
The capability of transient tracers to constrain the ocean circulation in the North Atlantic is explored. Study of an idealized tracer shows that inferences of circulation properties from transient state distributions are ...
Instabilities of an eastern boundary current with and without Large-scale Flow Influence
(Massachusetts Institute of Technology, 2011)
Eastern oceanic boundary currents are subject to hydrodynamic instability, generate small scale features that are visible in satellite images and may radiate westward into the interior, where they can be modified by the ...
Dynamics of marine zooplankton : social behavior, ecological interactions, and physically-induced variability
(Massachusetts Institute of Technology, 2008)
Marine ecosystems reflect the physical structure of their environment and the biological processes they carry out. This leads to spatial heterogeneity and temporal variability, some of which is imposed externally and some ...
Radiation and dissipation of internal waves generated by geostrophic motions impinging on small-scale topography
(Massachusetts Institute of Technology, 2009)
Observations and inverse models suggest that small-scale turbulent mixing is enhanced in the Southern Ocean in regions above rough topography. The enhancement extends 1 km above the topography suggesting that mixing is ...
The effect of stratification on wind-driven, cross-shelf circulation and transport on the inner continental shelf
(Massachusetts Institute of Technology, 2012)
Observations from a three-year field program on the inner shelf south of Martha's Vineyard, MA and a numerical model are used to describe the effect of stratification on inner shelf circulation, transport, and sediment ...
Infragravity waves over topography: generation, dissipation, and reflection
(Massachusetts Institute of Technology, 2006)
Ocean surface infragravity waves (periods from 20 to 200 s) observed along the southern California coast are shown to be sensitive to the bottom topography of the shelf region, where propagation is linear, and of the ...
Modeling convection in the Greenland Sea
(Massachusetts Institute of Technology, 1998)
A detailed examination of the development of a deep convection event observed in the Greenland Sea in 1988-89 is carried out through a combination of modeling, scale estimates, and data analysis. We develop a prognostic ...